Photographic-printing machine.



PATENTED MAR. 8 1904.

F. P. STEVENS. PHOTOGRAPEIG PRINTING MACHINE.

APPLICATION FILED-111N317, 1903.

2 SHEETS-SHEET l ed). J

10 MODEL.

PATBNTED MAR. 8, 1904.

F. P. STEVENS. PHOTOGRAPHIG Pl'wlINlIlfIG MACHINE.

APPLICATION IILBD JUN 17. 1903.

4: sums-31in! 2.

r- JV-" all 91w. F 7:; 67-2 u \fi M NMQ $1 6. H WW WLW AF,

shutters of the me the table, supp0rted by said legs.

iatented March 8, 195341.

FRED PARK STEVENS, Oi ST. LOUlS, i-

ilSSOURl.

PHOTOGRAPHlC-PFiiNTlNG MACHINE SPECIFICATION forming part of Letters 'Patent'li i'o.

Aypiication riled June 17, 1903.

, fication.

My invention relates to a machine for use in making photographic prints on sheets of sensitized paper or other material by the use 3 of artificial light.

The invention consists in features of novelty hereinafter fully described, and pointed out i in the claims.

Figure I is a top or plan View of my ma- Fig. 11 is aivertical transverse secchine. tron taken on line ii Ii, Fig.1. Fig. Ill is a longitudinal section taken on line 111 ill, if

I. .Fig. 1V is an enlarged section taken longitudinally throng-l.

i the telescoping lever by which the pressure-hack of the machine is 0perated. Fi V is an elevation of the pres sure-hack holding and releasing mechanism. Fig. V1 is a side elevation of the machine, illustrating the treadle mechanism by which the chineare actuated. Fig. V11 is a section taken on line Vii ii, Fig. I, through one of the pressure-hacksprings and one of the keepers to which said spring is connected.

1 designates the legs of my machine, and 2 2 designates side rails secured to the upper ends of the table'legs. 1n the table :2 is an opening which provides a shonldenpochet 3, in which is seated a transparent bed i, preferably of glass. This transparent bed is designed to serve as a support for a plmtographic negative, as indicated 5, Figs. ii and ill, and

'onto which is placed asheet of paper or other sensitized material which is to receive the image borne by the negative. 6- designates areflectonbox located beneath the table 2 and preferalily covered on the iii-- terior with a lining i, that may beef asbestos or ether salable material and coated with a White paint serve as a desirable reflector.

l l l l Serial. No. 161,856.

, dated March 8, 1934.

8 is a lamp located in the reflector-box (Sand n feral ii of the electric-arc type. Electric cwrent to supply the lamp 8 is controlled ough a switch 9. Ventilation For the intciior the reflector-hex secured by a pluot' vents l!) in the table ii designates a honing situated beneath the table the location of the pocket 3 they and provided atitsloivercnd withshouldc;

1'8 1 a transparent ditlus'ingplate, prefer ably 0' round glass, though it me he of plain glass, and suitable mat used thereon for the purpose of controlling the light passing thcrethrough from the .rel'lectordiox 6 to ach the negative su 'iported on the trans )arent bed-plate 4:.

la and 15 designate rock-shafts mounted in t. e side rails 2 and extending longitudinally 1 sin the reflector-box 6. These rock-shafts are fnrni .d, respectively, with crank-arms and 15;, seated exterior of the machine,

.ecn in Figs. ill, and Vi, and the are connected to a coupling-rod 16. Each or the rock-shafts l-i and 15 has lixed to it a swinging blind 17, that is designed for movement with the shafts into a horizontal position heneath the hoxing ll to prevent the passage of actinic rays of light into said boxing, and which also swing downwardly into the position seen in dotted line. Figs. ii and Ill, to permit the passage of light 'ii IOlD the interior oi the reilectonho into said boxing ii. The

I blinds 17 are of an desirable translucentma-- teriai, such as red or orange-colored fabric or paper, tnrough \TlllCll approximately nonactinic rays of light may pass irom the refiector-hox when the blinds are in elevated or closed position. The purpose of using blinds of the description stated is to "permit the projection of rays of light therethrough tn the bed-plate and negative situated in the pocket 3 of the machine-table that will not upon the sensitized sheet placed'on the neg tive, but which n ill, however, su'tlicihnt'to enable the operator'to observe the-outlines of the negative and adjust the print-sheet preperly thereon. v

Tillie cranlearins of the rock-shafts M and 15 and their coupling-rod 16 are so'positioned, as seen in Fig. Vi, that when one oi the rods is rotated the blind 17 carried thereby is swung in one direction, either into closed or open position, and the blind carried by the other rod islikewise. swung into closed or open condition. but travels in a reverse direction, as indicated in ii. As seen-in" Fig. VI, the rock-shafts are actuated through the medium of a lever-arrn 18, to which is pivot ed one end of a throw-rod i9,that is at its opposits end pivoted at 20 to an arm 21, carried by a treadle-rocker 22, journaled in two. of the legs of the machine, as seen in Figs. II and Ill. Projecting forwardly from the rocker 22 is a ,treadle 23, that extends to the frontof the machine, as seen in Fig. ill, to receive the operators foot and upon the depression of'which the blinds 1? are swung into open position.

24 designates a finger carried by the rockshaft 15 at its forward end in front of the forward side rail 2 of the machine; This finger is fixed to the rock-shaft 15 to move therewith and is provided at its far end with a forwardly-projecting caro lug the service of which will be hereinafter pointed out.

26- designates a lever pivoted at 727 interme diate of its ends to the forward side rail 2 and having arms 28 and 29, the latter of which is normally held against a stop 30 by a retractile spring 31, (se Fig. 'V,) which connects it to the table of the machine.

32 designates a trigger mounted on a pivot 33, carried by the arm 28 of the lever 26. This trigger has a triperm 3%, adapted to receive the engagement of the cam-lug 25, carried by the finger 24, projecting from the rock-shaft l5, and it also has a lever-arm 35, that is normally held to a stop 36, carried by the lever-arm 28, through themedinm of a spring 37, that is secured to the pivot 33, on which the trigger 32 is mounted. The arm 29 of the lever 26 has pivotally connected .to it a pull-rod 38, that extends to the arm of a catch-hook 40, which is pivotally supported in a bracket 4.1. See Figs. iii and V.) The catch-hook 40 projects upwardly from said bracket at the front of the machine and is designed for service inconnection with an opposing member to be hereinafter referred to.

42 designates a flexible hinge secured to the top of the table at the rear of the pocket 3 therein. This flexible hinge is connected to the rear section 43 of a. pressure-back, that in turn receives the flexible connection-of a forward pressure-back section 4:2 through the medium of hinges 45. The cntire'pressure back consists of the sections and 44 2, so designed to enter the pocket 3 in the table 2 to rest upon the negative and sensitized sheet supported therein on the transparent bed-plate 4. i6 designates lift-springs fixed at their rear ends to the table 2 in a position back ofthe flexible hinge '12. The forward free ends of these lift-springs extend to the rear pressureback: section 43 and are slidably connected to el e said section bypassing through loops "*7, secured to said section. Secured to the tabled at the rear of the pockets therein a bracket 48, in whichis swiveled the lower e of a pivot-post tl, the upper end of 1 non is screvwthreaded and bears an adjustment thunio nut 50. I

51 is a slide-block loos post 4-9 (see Fig. IV} and having laterallyprojecting pivot-stems 52. The pivot-stems 52 receive the pivotal connectio'n'of a rear tubular lever-section 53, onto which telescopes a tubular forward lever-section 54. I Passing tirough the rear lever-section is a cross-pin 55, and passing through the forwardv lever-- section 54 is a cross-pin 57 is a retractile spring situated in the telescoping levers and 5d and having its ends connected to the cross-pins and 56, passing therethrough.

58 designates handles projecting from the forward lever-section 54; (See Figs. I and HI.) At the front end of the lever-section 54: is a downwardly-extending arm 59, to which is adjustably connected a catch-hook '60, that is adapted for movement to the (pitchhook d0, hereinbefore referred to. The hook 60 is by the means stated adjustably connected to the lever-section 54; to provide for its adjustment with respect to said lever and neoessitate greater or diminished travel of said lever-section when the catclrhook 60 is to be engaged with the catch-hook &0 in a manner to be hereinafter referred to.

61 is aleaf pressure-spring pivotally connected intermediate of its ends to the rear lever-section 53 by a clip 62, that is held to said section by the cross-pin 55, before mentioned. In the ends of the pressurcspring 61 are sent ed slide-pins 63. that are provided with knobs 64. (See Vii.) These slide-pins pass through slots 65 in keepers 66, carried by the rear pressure-back sect 2 43, in which they operate in the flexing oi 0 spring (31 to travel transversel of the keepers to permit the ticking of the spring, while held from escape from the keepers by the knobs (it, which positioned beneath the keepers.

67 is a clip or saddle fitted to the forward lever-section 5d and in which the central portion of a forward pressure-spring 68 is held. The arms of this last-named pressure-spring extend to keepers 69, carriedb the forward pressure-back. section 4A. and the contain slide-pins "Z0 of similar shape to those, 63, in the rear pressurespring 61 and which operate in the keepers B9 in the same manner as the pins 63 operate in the keepers 66.

72 designates a spring by which the treadle 23 and the mechanism connected thcrewith, including the rock-shafts 14; and 15 and the blinds 17 carried thereby, are returned to normal positions after the treadle has been depressed to permit the passage-0f light from the reflector-box for the impression of the sly fitted to the pivot a image on the negatlve beneath the pressureback onto the sensitized sheet associated therewith.

In the practicai use of my printing-machine the operation is follows: The lamp 8 in the reflector-boa is kept constantiy burning, and the blinds 17 are normally in the-'l'iorizontal closed position seen in Figs. and HI, thereby excluding rays of light from the boxing 11, except the nonractinic rays that pass through the blinds, which are translucent, herein before stated, for the purpose mentioned. With the pressureback, consisting of the sections 13 and at, in the elevated position seen in dotted lines, Fig. III, the operator places a negative in position on the transparent bedplate 4 in the table-pocket 3 and lays thereon a sensitized sheet onto which he desires to impress the image of said negative. Then holding the negative and sensitized sheet in position with the fingers of one hand he draws the rear pressure-back section 455 forward-1y with the other hand until it rests on the sensitized sheet to hold it in position, when the hand by which it was previously ield is withdrawn tl'ierefrom. During this part of the operation the operator may constantly observe that the sensitized sheet is properly positioned on the negative by reason of passage of non-actinic rays of light through the blinds 17 from the reflector-box 6. Now by a pull upon one or both of the handles 58, carried by the forward section of the telescoping lever 53 5 1, said lever is elongated, and the forward pressureback section 44 is thus lowered into the table" pocket 3 to press against the negative and sensitized sheet beneath it, at which time the pressure-back is yieldingly held to the negative by the pressure-springs 61 and 68, which are depressed by the telescoping lever, and when the lever has been fully drawn down the catch-hook 60, carried thereby, engages with the catch-hook 4:0 to retain the pressure-back in lowered position. The degree of pressure exerted by the pressure-spring againstthe pressure-back is obtained by adjustment of the thumb-nut 50 to lower the position of the slide blook 51011 the post 49 and the adjustment of the catch-hook with respect to the lever-carried arm 59. The parts are now in condition for exposure to secure a print from the negative beneath the pressure-bacln and the operator depresses the treadle. On such depression of the treadle the crank-arms l i and 15, connected together and united to the treadle, as described, are moved in opposite directions to rotate the rock-shafts 14a and 15 and lower the blinds 1'7 simultaneously, thereby permittingpassage of rays of light through the diffusing-plate 13 and transparent bedplate 4: to reach the negativeon saidlastnamed plate. lVhen in the judgment of the operator the exposure has been suihcient, the pressure upon the treadle 23 is relieved, and the treadle and the parts connected thereto return to normal ions under the action of the spring 72, th ,rsby closing the blinds 1'? to stop the exposure. As the blinds are opened the finger Q4, carried by the. rock-shaft 15, is rotated therewith, and the cam-lug 95 on said finger swings downwardly and out of engagement with the trip-arm 3 1, as seen in dotted lines. Fig. V', in which action the trigger 32 is moved on its pivot without aflecting the releaSe-leVer-Q S, by which it is carried, and when said cam-hag becomes disengaged from the trip-arm the trigger 32 is returned to normal position by the spring 37 and'bears against the stop 36. When the blinds 17 are returned to closed position under the action of the treadle-operated mechanism of the machine, the finger 24,carried by the rock-shaft 15, is moved upwardi into engagement with the trip-arm 34 of the trigger 32 and bears thereagainst, as shown by dotted lines, Fig. V. Con tinned movement oi said finger causes said triparrn to be elevated and carry therewith the release-lever arm 28 and swing said leverarm upwardly and the lever-arm 29 down: wardly against the action of the spring 31, connected thereto; As a consequence the pullrod 38 is drawn downwardly, thereby swinging the lower catch-hook 40 out of engagement with the upper lever-carried catch-hook 60 to free the last-named hook. As a result of such freeing of the hook 60 the forward section 54 of the telescoping lever, by which the pressure-back is depressed, is drawn downwardly under the action of the spring 57, connecting it to the rear lever-section 53, so that the forward pressure hack section 44 is drawn into an angle with respect to the rear pressurebaek section 18, and at the same time both of the pressure-back sections are elevated into. the position seen in dotted lines, Fig. 111, under the action of lift-springs &9, that are fitted to the rear pressure-back section. The pressureback is thereby raised into a position that exposes the negative-receiving pocket in the table of the machine for the removal of the printsheet or the print-sheet and negative previously in the machine, and the parts are all in a position at such time for the next printing operation.

I claim as my 1nvent1on- 1. In a photographic-printing machine, the

combination of a table provided with a negafor ioldingsaid pressure-hack to *h e, mean l'orholni l said le rposed between said lever and wk, and i tspring for eieva ssnrebaclz a r ting machine, the combination of a table provided with a negative-receiving opening, means for supporting a negative in said opening, a refiector bpn, leans for controlling the passage of light from said refiectonbox to said negative-receiving opening, pressure-back for movement to the llfigililll/Q, a lever for holding said pressure-back to the negative, springs interposed between. said lever and said pressure-back, and means by which said springsare slidably' connected said pressurebackto permit ilexing of the springs, substantially as set forth.

i, lln aphotographic-printing machine, the combination of a table provided with a nega-- tiv' -receivirig' opening, means for supporting for controlling the passage of light drelieclonbox to said negative-receivn a pressure-back for movement re, a lever for holding said pres- .Jach in ioi'vered position, springs interposed between said lever and said pressure-- back, slide-pins carried by the springs, knobs by said slide-pins, and slotted keepers cried by said pressureback in which said anine sliding engagement, substanas set forth.

lie-printing machine, the

35 photo 'rapl atio e table provided with a'nega receivi i for supporting reflector-box, passage of light to said negativeere rc-baclr for moveve, means for holding said the negative, and a lift-spring e 1.72- each i i means 4 istantiz lg as set forth. r3, e photographic -printing machine, the combination of a table provided With a negative-receiving opening, means for supporting a negativein said opening, a reflector-box, means for controlling the passage of light from ij'eie ztor-wir to said negative-repre *--l;-ack consisting of ether, sectional lever for lire-heel; to the negative, holding said lever when the i reg" the negative,

rth. lie-printing machine, the .ole provided with a negaopening, means for sunporting said opening, a 4 box, means for controlling the passage of light from reflector-box to said "i e-receiving o A. a pressure-back con sting of sections together, a sectional lever for retde o enin gative in said opening, a reflectonbox,

when its hold holding said pressnre bacl: to the negative, means for holding said lever when the presmeans for contracting said love" when the pressnre-hach is freed, subst. lly as set forth, v

8. lln a photographic-printing machine, the combination of a table provided With a nega- [five-receiving opening, rneans for supporting a negative"in said opening, a reflector-box, means-for controlling the passage of light from said reflector-box to said negative-receiving opening, a pressure-back consisting of sec tions hinged together, a sectional lever for holding said pressure-back to the negative, means for holding said lever when the pressure-back is'resting against the negative, a lift-spring for moving saidpressureback, and means for contracting said lever when the pressure-back is freed, substantially as set forth. 7

9. In a photographic-printing machine, the combination of a table provided with a negative-receiving opening, means for holding a negative in said opening, a reflector-box, means for controlling the passage of light from said reflector-box to said negative-receiving open.- ing, a pressure-back for movement to the negative in said openings lever, springs carried by said lever arranged to press against said pressure-back, and means for adjusting said lever with respect to said pressure-back, substantially as set forth.

10. in a photographic-printingmachine,the combination of a table provided. with negaative-receiving opening, ing a negative in said opening, a sectional pressure-hack, a lever composed of tels'rscoping sections having connection with said prestable, and a spring connecting the sections of said lever and through. the medium of which its length is contracted, forth.

1 1. in a photographic-printin g machine, the l combination of a table provided with a tive-receiving opening, a reflector box, means for controlling the passage of light from said reflector-box to said negative-receiving opening, a sectional pressure-back, a lever connected. to said table and having engagement With said pressure-back, means for holding said lever W ien said pressure-back is resting against the negative, means for operating said light-controlling means, and means operating throughsaid last named means for releasing said pressure-back lever, substantially as set forth.

12. In a photographic-printingmachine,the combination of a tableprovided with a negai live-receiving opening, a reflector-box, blinds for centrolling the-passage of light from said reflector-hon to said negative-receiving open ing, mechanism for riperating said blinds, a pressure --oack tor movement to said negative means i" or snpport substantially as set sure-back, and swinging-l5 connected to said sure-back is resting against the negative, and

ITO

table and having engagement With said pressure-back, a catch for engaging said lever, a release-lever having connection With said catch, means carried by said blind-operating means for actuating said release-lever, and a finger carried by said blind-operating means to engage said release-lever, substantially as set forth.

In testimony whereof I have hereunto set my hand this 30th day of May, 1903.

FRED PARK STEVENS.

In presence of E. S. KNIGHT, BLANOHE HOGAN. 

